Return of Reckoning

Data.myp:
System.IO.FileNotFoundException: Could not find file 'C:\Users\mynameisjeff\Downloads\warhammer\Warhammer Online - Return of Reckoning\mythloginserviceconfig.xml'.
File name: 'C:\Users\mynameisjeff\Downloads\warhammer\Warhammer Online - Return of Reckoning\mythloginserviceconfig.xml'
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access)
at RoRLauncher.Client.UpdateWarData()

it lets me login but it wont let me do anything else

Read the common issues sticky post. Like the giant red box above this post tells you to do. The answer is in there.